Electrical panel-board.



"0.705,850. Patented luly 29, |902.

H. KRANTZ. v

ELECTRICAL PANEL BOARD.

(Application filed lar. 12, 1902.)

(No Model.)

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j/ Y. /f/sAyToHA/Eys UNITED STATES PATENT Y OFFICE.

HUBERT KRANTZ, OF BROOKLYN, NEV YORK.

ELECTRICAL PANEL-BOARD.,

SPEIFIATION forming partof Letters Patent No. 705,850, dated July 29, 1902.

Application tiled March l2, 1902. Serial NOQ'LS'YI. (No model.)

To all whom, it uuty concern:

Be it known that I, HUBERT KRANTZ, a citizen of the United States ot America, residing in the borough of Brooklyn, in the county of Kings, State of New York, have invented an Improved Electrical Panel-Board, of which the following is a specification.

One great difficulty in the use of electrical panelboards and switchboards, especially thosev put up in houses and other such structures, is that unskilled or careless attendants are liable tobe harmed by coming in contact with live parts of the circuit in manipulating the switches or in renewing blown-out fuses.

The main 'object of my invention is to so construct a panel-board or switchboard that these troubles cannot occur.

In the accompanying drawings, Figure l is a transverse section of a panel-board embodying my invention. Fig. 2 is a face view of a part of the panel with the outer door open. Fig. 3 is a face view of one-halt of the panelboard with the protecting cover removed; and Fig. 1i is a sectional view on the line e 4i, Figs. l, 2, and 3; and Fig. 5 is a view of a modification.

In the drawings I have shown my invention as applied to a panel-board on the three-wire system; but it will be readily understood that my invention may be employed on otherconstructions of panel or switch boards.

In the views, A is the insulating back plate, and B represents the sides of the panel-board, which when employed in a building` or like structure mayhave its front closed byahinged or sliding door in any usual or convenient manner, although I prefer to construct the door with a fixed center part O over the busbars and cross-bars and hinged side doors O and C2 over the fuses and switches for the branch circuits.

D, D', and l)2 are bus-bars, and It E' crossbars for the switch and fuse connections to the various branch circuits.

The switches themselves may be oiany suitable or convenient constr uction-quick-b reak switches, slow-break switches, or push-button switches, 'for example. In the drawings I have shown a slow-break switch F, pivoted to a post f on the back plate and having an insulated actuating-handle f. In any case the current-carrying parts ot the switch are inclosed and protected by a cover-plate K, which I prefer to make of insulating material. The actuating-handle f for the switch F passes up through an opening 7c in the protecting-plate. At the sides of the panel-board on the back plate are the usual binding-posts M, to which the branch wires are to be connected, and in connection with these posts are spring-clips or other suitable contacts on, with which the movable current-carryin g part of the switch can make connection. In the case shown this movable part f2 is a pivoted lever-piece, whose plates can make connection with said clips m and also with springclips or other suitable contacts a on plates N. In the construction shown in Figs. l, 2, 3, and t these connecting-plates N are mounted (preferably upon an insulating-partition P) at some distance away from the face of the back plate A and are provided with contact-clips u', which are arranged over or in front ot clips c c' on the cross-bars E E', in order that I may provide for the insertion and withdrawal of the fuses or t' use-cartridges into these pairs ot clips substantially at right angles to the plane of the back plate. In the present instance I have shown these fuses as arranged between the switches and the crossbars E E', but the relative positions of these parts may be changed, provided the switches and fuse-clips are mounted upon the same back plate A with the bus-bars and crossbars, or, in other words, all on the same panel, and provided the current-carrying parts oi' the fuses, as well as the switches, are inclosed and protected by a cover or covers, such as K. It will be seen in Fig. l that the insulating cover-plate K extends over the fuses R, holes 1 r, Fig. 2, being formed in the plate K for the ready insertion and withdrawal of the fuse-cartridges into and from the spring-clips n on the plates N and the clips c e' on the ends ot the cross-bars E E. The partition F also carries guides p (in the form of openings in a laterally-projecting part of thc partition) 'for the guidance of the fuses. I prefer to make these fuses in the form of closed cartridges, as indicated, and forconvenience and protection of the person who may have to insert or withdraw them I prefer to provide them with insulating-handles o".

' In the modification shown in Fig. 5 I have IOO shown another form of fuse R', which will be inserted, by means of its handle r2, into clips n2 in a position parallel with the back plate, as will be understood.

By the constructions described I provide a panel-board which has its switches and fuse connections all mounted on the same back plate with the bus and cross bars, thus constituting a self-contained structure in which the current-carrying parts of the switches and fuse connections are protected from harming the person who has to use them.

I claim as my inventionl. An electrical panel-board, having a back plate with conducting bars and switches mounted on the said back plate, and a protecting-cover inclosing the said conductingbars and the current-carrying parts of the switches and their connections, said cover having openings for the manipulation ot the switches.

2. An electrical panel-board, having conducting-bars, switches and fuses and contacts for the switches and fuses, with a protectingcover inclosing the said conducting bars, switches and fuses and their contacts, said cover having openings for the insertion of the fuses and for the manipulation of the switches.

3. An electrical panel-board, having a back plate,busbars and cross-bars with branch circuit connections and switches therein, all mounted on said back plate, and a protectingcover inclosing all the current-carryin g parts of the panel-board but with openings for the manipulation of the switches.

4L. An electrical panel-board, having a back plate,busbars and cross-bars with branch circuit connections and switches and fuses in said branch circuits and a protecting-cover for all the current-carrying parts of the panelboard, but with openings for the insertion of the fuses and the manipulation of the switches, substantially as described.

5.. An electrical panel-board having a back plate and conducting-bars and switches thereon with pairs of fuseclips,one clip of each pair being in front of the other to receive the fusecartridge substantially at right angles to the plane ot' the back plate, in combination with a protectingcovor for all the current-carrying parts of the panel-board, but with openings for the insertion of the fuses and the 1nanipulation of the switches, substantially as described.

6. An electrical panel-board, having aback plate and conducting-bars, switches and connecting-plates with pairs of fuse-clips, one clip of each pair being directly on the back plate and the other over or in front of the first to receive the fuse-cartridge substantially at right angles to the plane of the back plate, in combination with a protecting-cover for all the current-carryin g parts of the panel-board, but with openings for the insertion of the fuses and the manipulation of the switches, substantially as described.

7. An electrical panel-board having a back plate and conducting-bars with pairs of fuseclips, one clip of each pair being over or in front of the other and a cover-plate for the fuse-clips, said cover-plate having a hole for the insertion of the fuse-cartridge substantially at right angles to the back plate.

8. An electrical panel-board having a back plate and cond ucting-bars with binding-posts having contacts on the back plate, and contact-plates at some distance from the face of the back plate, a switch having a pivoted current-'carrying part to make connection with said contacts and a cover-plate with a hole through which the switch can be manipulated.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HUBERT KRAN'IZ.

Witnesses:

JULIUs LEHRENKRAUSS, Jr., ALFRED W. Knucnn.l

ulsclaimer DISCLAIMER- 705,850.-He7 fmvzzfz, Brooklyn, N. Y. ELECTRICAL PANEL-BOARD. Patent dated July 29, Diselemer led November 9, 1911, by the patentee and assignee, II. 7616671252 Manufacturing Oompapg.

Do hereby dsol'm-i y All matters set forthn olamslhd 8 of said pate11t.-[Ojcz`al Gasezfe, Vovember 14, 1911.]

DISCLAIMER- 705,850.-Hubert Kmntz, 1?1ook1yn, N. Y. ELECTRICAL PANEL-BOARD. Patent dated July 29A, D selair'ner filed November 9*, 1911, by the patentee and assignee, H Ifvmtz Manaqfacftuz'rjQompa? Do hereby lisclz'im-ii "l 'Q 1 i J 4 All matters set fosrth` `n clzi'msllaixd 3 of said patent.-[Ojcz'al Gazette,

Novembev 14,1911] I I: 

